Question: In what year did Maria Klawe cease being a chairperson for the Association for Computing Machinery?
Paraphrase: Maria Klawe was replaced as chairperson for the Association for Computing Machinery in which year?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q127992 p:P488 ?s . ?s ps:P488 wd:Q11754 . ?s pq:P582 ?value}